Hybrid transmission oil quantity test method, system, and medium

Abstract

The present invention discloses a hybrid transmission oil quantity test method, system, and medium. The method comprises the following steps: Step S10, constructing a hybrid transmission oil quantity test device, wherein the hybrid transmission oil quantity test device comprises a three-motor hybrid power test bench, an inclination angle fixture, and a transparent hybrid transmission; Step S20, obtaining oil stirring and oil splashing conditions at locations requiring lubrication in the transparent hybrid transmission under pre-set different slopes, different inclination angles, and different operating modes; and Step S30, determining whether the test passes based on the oil stirring and oil splashing conditions. This invention enables testing of the hybrid transmission's lubricating oil supply under different operating modes, different slopes, and different inclination angles during the early stages of hybrid transmission development, assessing whether the lubrication system meets requirements under extreme conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transmission, in particular to a hybrid transmission oil quantity test method, system and medium. BACKGROUND

[0002] The running process of the hybrid electric vehicle involves various running modes and uphill, downhill and other road conditions, which may cause the hybrid transmission to be unable to obtain sufficient lubricating oil to ensure reliable operation. At present, most manufacturers conduct tests on different slopes and the like through road tests, which takes a long time and it is difficult to change the design later. In the early stage of development of the hybrid transmission, it is impossible to understand the lubricating oil supply of the hybrid transmission under different running modes and different inclination angles, to predict the maximum inclination angle that the hybrid transmission can reach, to evaluate whether the lubricating system meets the requirements under extreme conditions, and to be not conducive to the development and optimization of the lubricating system of the hybrid transmission. SUMMARY

[0003] The main purpose of the present application is to provide a hybrid transmission oil quantity test method, system and medium, which aims to test the lubricating oil supply of the hybrid transmission under different running modes, different slopes and different inclination angles in the early stage of development of the hybrid transmission, and to evaluate whether the lubricating system meets the requirements under extreme conditions.

[0004] To achieve the above-mentioned purpose, the present application provides a hybrid transmission oil quantity test method, comprising the following steps:

[0005] Step S10, a hybrid transmission oil quantity test device is built, wherein the hybrid transmission oil quantity test device comprises a three-motor hybrid power test bench, an inclination angle tooling and a transparent shell hybrid transmission;

[0006] Step S20, the oil stirring and oil splashing of the parts needing lubrication of the transparent shell hybrid transmission under different slopes, different inclination angles and different running modes are obtained;

[0007] Step S30, whether the test is passed is judged according to the oil stirring and oil splashing.

[0008] The further technical scheme of the present application is that the three-motor hybrid power test bench comprises a driving motor, two loading motors, a measurement and control system, a data acquisition system and a temperature control system.

[0009] The further technical scheme of the present application is that the step S20, the step of obtaining the oil stirring and oil splashing of the parts needing lubrication of the transparent shell hybrid transmission under different slopes comprises:

[0010] Step S201, according to the whole vehicle installation angle, the transparent shell hybrid transmission is installed to the test bench, the test bench is started, the test bench is stably run for a preset time length, and the oil stirring and oil splashing of the parts needing lubrication at the slope of 0% are observed synchronously.

[0011] Step S202, the inclination angle tooling is replaced, the transparent shell hybrid transmission is turned to the uphill 20% slope, the transmission oil amount is adjusted to the initial design oil amount, the test bench is started, the test bench is stably run for a preset time length, and the oil stirring and oil splashing of the parts needing lubrication at the uphill slope of 20% are observed synchronously.

[0012] Step S203, the inclination angle tooling is replaced, the transparent shell hybrid transmission is turned to the uphill 30% slope, the transmission oil amount is adjusted to the initial design oil amount, the test bench is started, the test bench is stably run for a preset time length, and the oil stirring and oil splashing of the parts needing lubrication at the uphill slope of 30% are observed synchronously.

[0013] Step S204, the inclination angle tooling is replaced, the transparent shell hybrid transmission is turned to the uphill 35% slope, the transmission oil amount is adjusted to the initial design oil amount, the test bench is started, the test bench is stably run for a preset time length, and the oil stirring and oil splashing of the parts needing lubrication at the uphill slope of 35% are observed synchronously.

[0014] Step S205, the inclination angle tooling is replaced, the transparent shell hybrid transmission is turned to the downhill 35% slope, the transmission oil amount is adjusted to the initial design oil amount, the test bench is started, the test bench is stably run for a preset time length, and the oil stirring and oil splashing of the parts needing lubrication at the downhill slope of 35% are observed synchronously.

[0015] Step S206, the inclination angle tooling is replaced, the transparent shell hybrid transmission is turned to the downhill 30% slope, the transmission oil amount is adjusted to the initial design oil amount, the test bench is started, the test bench is stably run for a preset time length, and the oil stirring and oil splashing of the parts needing lubrication at the downhill slope of 30% are observed synchronously.

[0016] Step S207, the inclination angle tooling is replaced, the transparent shell hybrid transmission is turned to the downhill 20% slope, the transmission oil amount is adjusted to the initial design oil amount, the test bench is started, the test bench is stably run for a preset time length, and the oil stirring and oil splashing of the parts needing lubrication at the downhill slope of 20% are observed synchronously.

[0017] The further technical scheme of the present application is that the preset time length in step S201 is 60s.

[0018] The further technical solution of the present application is that the parts needing lubrication include gear pairs, bearings, clutches and differentials.

[0019] The further technical solution of the present application is that the different operation modes of the hybrid transmission include power generation mode, parallel mode and pure electric mode.

[0020] The further technical solution of the present application is that the method further comprises:

[0021] The test situation is recorded in real time by a video recording device, and the test process is recorded.

[0022] To achieve the above-mentioned purposes, the present application further provides a hybrid transmission test system, which comprises a three-motor hybrid power test bench, an inclination angle tool, a transparent shell hybrid transmission, a memory, a processor and a hybrid transmission test program running on the processor, wherein the hybrid transmission test program performs the steps of the method as described above when executed by the processor.

[0023] To achieve the above-mentioned purposes, the present application further provides a computer readable storage medium, characterized in that the computer readable storage medium stores an oil hybrid transmission test program, wherein the hybrid transmission test program performs the steps of the method as described above when executed by a processor.

[0024] The hybrid transmission test method, system and medium of the present application have the following advantages:

[0025] 1. The present application can determine the lubricating oil supply of the hybrid transmission under different operation modes, different slopes and different inclination angles.

[0026] 2. The present application can determine the amount of lubricating oil required by the hybrid transmission to reach the maximum inclination angle.

[0027] 3. The present application can determine the limit inclination angle of the hybrid transmission. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the drawings shown.

[0029] Figure 1 is a flowchart of a preferred embodiment of the hybrid transmission test method of the present application.

[0030] The implementation of the present application, functional characteristics and advantages will be further described with reference to the embodiments and drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0032] The present application provides a hybrid transmission oil quantity test method, please refer to Figure 1 The preferred embodiment of the hybrid transmission oil quantity test method of the present application comprises the following steps:

[0033] Step S10, a hybrid transmission oil quantity test device is built, wherein the hybrid transmission oil quantity test device comprises a three-motor hybrid power test bench, an inclination angle tooling and a transparent shell hybrid transmission.

[0034] Step S20, the oil stirring and oil splashing conditions of the parts needing lubrication of the transparent shell hybrid transmission under different slopes, different inclination angles and different running modes are obtained.

[0035] Step S30, whether the test is passed is determined according to the oil stirring and oil splashing conditions.

[0036] In the embodiment, the three-motor hybrid power test bench comprises a driving motor, two loading motors, a measurement and control system, a data acquisition system and a temperature control system.

[0037] The working conditions of the hybrid transmission uphill, downhill, left and right tilt, braking or forward acceleration are adjusted by the inclination angle tooling (the overturning angle is 0°, ±20°, ±30°, ±35°).

[0038] The hybrid transmission adopts a transparent shell, which facilitates observation and judgment of oil quantity.

[0039] The initial design oil quantity of the hybrid transmission in the embodiment is the initial working oil quantity, the test working conditions are tested according to Table 1, and the test is performed in the order of uphill 0%→20%→30%→35%, downhill 35%→30%→20%, and inclination angle 0%→20%→30%→35%.

[0040] Table 1

[0041]

[0042]

[0043] In this embodiment, the step S20 of acquiring the oil stirring and oil splashing conditions of the parts needing lubrication of the transparent shell hybrid transmission at different preset slopes comprises:

[0044] Step S201, install the transparent shell hybrid transmission to the test bench according to the vehicle installation angle (slope 0%), start the test bench, make the test bench run stably for a preset time length, and synchronously observe the oil stirring and oil splashing conditions of the parts needing lubrication at a slope of 0%.

[0045] Step S202, replace the inclination angle tooling, turn the transparent shell hybrid transmission to an uphill slope of 20%, adjust the transmission oil amount to the initial design oil amount, start the test bench, make the test bench run stably for a preset time length, and synchronously observe the oil stirring and oil splashing conditions of the parts needing lubrication at an uphill slope of 20%.

[0046] Step S203, replace the inclination angle tooling, turn the transparent shell hybrid transmission to an uphill slope of 30%, adjust the transmission oil amount to the initial design oil amount, start the test bench, make the test bench run stably for a preset time length, and synchronously observe the oil stirring and oil splashing conditions of the parts needing lubrication at an uphill slope of 30%.

[0047] Step S204, replace the inclination angle tooling, turn the transparent shell hybrid transmission to an uphill slope of 35%, adjust the transmission oil amount to the initial design oil amount, start the test bench, make the test bench run stably for a preset time length, and synchronously observe the oil stirring and oil splashing conditions of the parts needing lubrication at an uphill slope of 35%.

[0048] Step S205, replace the inclination angle tooling, turn the transparent shell hybrid transmission to a downhill slope of 35%, adjust the transmission oil amount to the initial design oil amount, start the test bench, make the test bench run stably for a preset time length, and synchronously observe the oil stirring and oil splashing conditions of the parts needing lubrication at a downhill slope of 35%.

[0049] Step S206, replace the inclination angle tooling, turn the transparent shell hybrid transmission to a downhill slope of 30%, adjust the transmission oil amount to the initial design oil amount, start the test bench, make the test bench run stably for a preset time length, and synchronously observe the oil stirring and oil splashing conditions of the parts needing lubrication at a downhill slope of 30%.

[0050] Step S207: Replace the tilt angle tooling, flip the transparent housing hybrid transmission to a 20% downhill slope, adjust the transmission oil volume to the initial design oil volume, start the test bench, and allow the test bench to run steadily for a preset time. Simultaneously observe the oil stirring and oil splashing at the parts requiring lubrication at a 20% downhill slope.

[0051] After observing the oil stirring and oil splashing at the part requiring lubrication at a downhill slope of 20%, the test of the hybrid transmission oil volume at the upper and lower limits, as well as the test of the transmission tilting to the left and right, are respectively completed in a manner similar to that of steps S201 to S205, which will not be repeated here.

[0052] It should be noted that, in this embodiment, a video recording device can be added to record the real-time situation and the test process data can be recorded in Table 2.

[0053] Table 2

[0054]

[0055] It should be noted that during the test, the amount of oil added before the test, the oil stirring and oil splashing of each part that needs lubrication under different slopes and different operating modes must be recorded in Table 2. For splash lubrication and oil-soaked parts, fill in "yes" if there is oil splashing, otherwise fill in "no".

[0056] In addition, for the test result judgment, if oil reaches all parts that need lubrication, the test is judged to have passed.

[0057] Furthermore, in this embodiment, the preset time length in step S201 is 60 seconds. In other implementations, the preset time length may also be set according to actual conditions or experience, and the present invention does not limit this.

[0058] Furthermore, in this embodiment, the parts requiring lubrication include gear pairs, bearings, clutches, and differentials.

[0059] Furthermore, in this embodiment, the different operating modes of the hybrid transmission include a power generation mode, a parallel mode and a pure electric mode.

[0060] The beneficial effects of the hybrid transmission test method of the present invention are:

[0061] 1. The present invention can determine the lubricating oil supply status of a hybrid transmission in different operating modes, different slopes, and different tilt angles;

[0062] 2. The present invention can determine the amount of lubricating oil required for a hybrid transmission to reach a maximum tilt angle;

[0063] 3. The application can determine the limit inclination angle of the hybrid transmission.

[0064] To achieve the above object, the application further provides a hybrid transmission test system, which comprises a three-motor hybrid test bench, an inclination angle tool, a transparent shell hybrid transmission, a memory, a processor and a hybrid transmission test program running on the processor. The hybrid transmission test program performs the steps of the method as described in the above embodiment when run by the processor, which will not be repeated here.

[0065] To achieve the above object, the application further provides a computer readable storage medium, which stores a hybrid transmission test program. The hybrid transmission test program performs the steps of the method as described in the above embodiment when run by a processor, which will not be repeated here.

[0066] The above description is only the preferred embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields within the concept of the application, and the content of the application specification and drawings are included in the patent protection scope of the application.

Claims

1. A hybrid transmission oil quantity test method, characterized in that: The following steps are involved: Step S10: constructing a hybrid transmission oil quantity test device, wherein the hybrid transmission oil quantity test device includes a three-motor hybrid power test bench, an inclination angle tooling, and a transparent housing hybrid transmission; Step S20, obtaining oil stirring and oil splashing conditions of the transparent housing hybrid transmission at locations requiring lubrication under different preset slopes, different tilt angles, and different operating modes; Step S30, judging whether the test is passed based on the oil stirring and oil splashing conditions; The step S20 of obtaining the oil stirring and oil splashing conditions of the transparent housing hybrid transmission at the parts requiring lubrication at different preset slopes includes: Step S201, installing the transparent housing hybrid transmission on the test bench according to the vehicle installation angle, starting the test bench, allowing the test bench to run steadily for a preset time, and simultaneously observing the oil stirring and oil splashing at the parts requiring lubrication at a slope of 0%; Step S202: replacing the tilt angle fixture, flipping the transparent housing hybrid transmission to a 20% uphill slope, adjusting the transmission oil volume to the initial design oil volume, starting the test bench, and allowing the test bench to run steadily for a preset time, while simultaneously observing oil stirring and oil splashing at the parts requiring lubrication at a 20% uphill slope; Step S203: replacing the tilt angle fixture, flipping the transparent housing hybrid transmission to a 30% uphill slope, adjusting the transmission oil volume to the initial design oil volume, starting the test bench, and allowing the test bench to run steadily for a preset time, while simultaneously observing the oil stirring and oil splashing at the parts requiring lubrication at a 30% uphill slope; Step S204: replacing the tilt angle fixture, flipping the transparent housing hybrid transmission to a 35% uphill slope, adjusting the transmission oil volume to the initial design oil volume, starting the test bench, and allowing the test bench to run steadily for a preset time, while simultaneously observing oil stirring and oil splashing at the parts requiring lubrication at a 35% uphill slope; Step S205: Replace the tilt angle fixture, flip the transparent housing hybrid transmission to a 35% downhill slope, adjust the transmission oil volume to the initial design oil volume, start the test bench, and allow the test bench to run steadily for a preset time, while simultaneously observing the oil stirring and oil splashing at the parts requiring lubrication at a 35% downhill slope; Step S206: Replace the tilt angle fixture, flip the transparent housing hybrid transmission to a 30% downhill slope, adjust the transmission oil volume to the initial design oil volume, start the test bench, and allow the test bench to run steadily for a preset time, while simultaneously observing the oil stirring and oil splashing at the parts requiring lubrication at a 30% downhill slope; Step S207: Replace the tilt angle tooling, flip the transparent housing hybrid transmission to a 20% downhill slope, adjust the transmission oil volume to the initial design oil volume, start the test bench, and allow the test bench to run steadily for a preset time. Simultaneously observe the oil stirring and oil splashing at the parts requiring lubrication at a 20% downhill slope.

2. The hybrid transmission oil quantity test method according to claim 1, characterized in that: The three-motor hybrid power test bench includes a drive motor, two loading motors, a measurement and control system, a data acquisition system and a temperature control system.

3. The hybrid transmission oil quantity test method according to claim 1, characterized in that: The preset duration in step S201 is 60 seconds.

4. The hybrid transmission oil quantity test method according to claim 1, characterized in that: The parts that need lubrication include gear pairs, bearings, clutches, and differentials.

5. The hybrid transmission oil quantity test method according to claim 1, characterized in that: The different operating modes of the hybrid transmission include a power generation mode, a parallel mode and a pure electric mode.

6. The hybrid transmission oil quantity test method according to any one of claims 1 to 5, characterized in that: The method further comprises: The test situation is recorded in real time through video equipment, and the test process is recorded.

7. A hybrid transmission test system, characterized in that: The system includes a three-motor hybrid test bench, an inclination angle tooling, a transparent shell hybrid transmission, a memory, a processor, and a hybrid transmission test program running on the processor. When the hybrid transmission test program is run by the processor, the steps of the method described in any one of claims 1 to 6 are executed.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores an oil hybrid transmission test program, and the hybrid transmission test program is executed by a processor to perform the steps of the method according to any one of claims 1 to 6.

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